public async Task <ActionResult <IEnumerable <EmployeeTaskDto> > > GetAllEmployeesTasks()
        {
            var employeesTasks = await _employeeTaskRepository.GetTasksAsync();

            var employeeTaskDtos = _mapper.Map <IEnumerable <EmployeeTaskDto> >(employeesTasks);

            return(Ok(employeeTaskDtos));
        }
        public async Task <IActionResult> DeleteEmployeeWithTask(Guid employeeId)
        {
            var employeeEntity = await _employeeRepository.GetEmployeesAsync(employeeId);

            if (employeeEntity == null)
            {
                return(NotFound());
            }

            //虽然级联删除设置了,但是这里要查询一下employee名下的task,加载到dbcontext里
            await _employeeTaskRepository.GetTasksAsync(employeeId);

            _employeeRepository.DeleteEmployee(employeeEntity);
            await _employeeRepository.SaveAsync();

            return(NoContent());
        }